.practice {
  background-color: skyblue;
  padding: 30px 0;
  h1 {
    color: red;
  }
  .input111 {
    padding: 20px 0;
    background-color: yellow;
  }
  .huidiaoref,.createref {
    padding: 30px 0;
    background-color: orange;
    margin: 30px 0;
  }
  .createref {
    background-color: aqua !important;
  }
}
